Nervous SystemNervous System

Carries messages to and from the brain and spinal cord and all other parts of the body.

The Nervous System Consists

of the:

Brain, Spinal Cord & Branching

Nerves

The Nervous System is divided into two systems:

Central Nervous System

& Peripheral Nervous

System

The Central Nervous System

The Central Nervous System consists of

the:Brain

& Spinal Cord

The Brain is a mass of

Nerve Tissue

3 Parts of the Brain are:

1. Cerebrum2. Cerebellum3. Brain Stem

The Cerebrum Controls:

Ability to Memorize, Think,

&Learn

The Cerebellum Controls:

Coordination of muscle activity.

The Brain StemIncludes the

Medulla -and controls Involuntary

Actions

The Spinal CordThe Spinal CordIs a thick band of nerve cells that extends through the backbone.

There are 31 pair of spinal nerves branching from it.

The Peripheral Nervous System

The Peripheral Nervous system

consists of Cranial Nerves

& Spinal Nerves

There are: 12 Pair of CRANIAL NERVES

There are: 31 Pair of

SPINAL NERVES

Cranial NervescontrolSenses

&Motor Activity

Spinal Nerves TRANSMIT

informationTo & From All

Parts of the Body

Neurons Are NERVE Cells. There are 2 types of Neurons:

Sensory&

Motor Neurons

Sensory Neurons:Sensory Neurons:

Carry messages FROM sense organs

TO the brain.

Motor Neurons:Motor Neurons:

Carries message FROM THE BRAINTO MUSCLES & GLANDS

Controls ability to memorize, think, learn

Controls coordination ofMuscle activity

Contains the medulla whichcontrols involuntary actionssuch as heart rate andbreathing